Drill press construction



March 14,1950 H. M. CLARK 5 5 DRILL PRESS CONSTRUCTION Filed July so, 1947 2 Sheets-Sheet 1 March M, 195%) H. M. CLARK fii fi DRILL PRESS CONSTRUCTION Filed July 150, 1947 2 Sheets-Sheet 2 Patented Mar. 14, 1950 DRILL PRESS CONSTRUCTION H ber M... Clark, Dettoi Mich, assignor to she;- man. Pmducts, Inc.a H zel Park, Mich a corpor tion ofMioh gan Application 1111: 311, 1947, Serial No. 464,861

7 Claims... 1 'This invention relates o drill mess construotion and more. particularly to a dril p ess attaehment adapted to be connected to. a tnaoter to be driven. by the power take 01,? shaft of, the

txaotor;

.In the o eration of. farms and simil estah nts. it isheouently tiesi ahle to have various. typ s o po er op rated tools such as sti presses, rinders. flexible shaft too s and. the like herlctoiore it has. been necessary t herierm arious mach ne operati ns e her by h d or to provide separate power machines tor performe ing the operations. Such e tablishments norm lly have tractors availa le and. it is one 01 the obje ts. th present invention to provide. an attachment which eas ly be attac ed to and .ci taohee. f om the tractor to be driven through the tractor power take off shaft for performin various ypeset power op ations.

Another object. is. to provide drill press t. taehment .for connection. to a tx ctor which can perfo m the usual drill. Dress perations hrough utilizat on f the powerof the t tactor engine.

Still another objec is to provide a drill press t achment in which provisions are made for driving various other types .of power tools such as grinders, flexible shaft devices and the like The attachment prefe a y includes an auxiliary shatt lying at an acute. angle to the tractor power take-o shaft for minimum 'mteri te ce with eccessibility of the auxiliary shaft.

A further object is to provide. a .drill press. icon. struotion in which the. drill shaftorives an. anxil iary shaft which can be utilized to operate Yali nus. types of power tools.

The. above an other bjects and advanta es 0! the invention will e. more readily appa ent when rea in ne ion with the accompanyin drawing, in which- Figure 1 is a partial perspective, view of a com ventional farm tractor with a drill press atta h! merit embodying the invention attached thereto;

. ,Figure 2. is a perspective view .of thedrill press attachment illustratin the connection-oi a flex. ible shaft tool thereto;

Fi ure .3 is a Plan View of the attachment: and

Figure .4 is a vertical section.

The attachment of the present invention i adapted to be attached to and detached. from a conventional type of farm tractor to teoeiveits n e throu h the usual now-er take off shaft oi the tr ctor As partially illustrated in Figure 1.. the tractor includes a rear axle l t uph rteo on wheels II which axe drivahly connected.

through a differential mechanism enclosed ,s. casing l2. The tractor inclndesa power takeshaft l2 (Figure 4) which extends-t rough an opening in the lower part of v the difierentiai casing l2.

The attachment. as shown, comprises a "with cal-1y elongated housing 3 wh ch m y of. cast metal or the like and. which is tonn s at one side with an attachment plate l4 shaped to .111; ainst the differential casing liter the openm therein. he plate 4.4 may he niovid si with openings to receive. screws 14' to he. threooeii into the holes normally yphcwi ieti the ciifier ential casing s that the ousin is ri idly at cac ed to the casing The hou ng" entries on annu ar exiting. s eeve s 'eh is located cem trally in the at aching; p ate in a position to re ceive the end of the power. take off shait .12., as shown in Figure 4.. The take on. shaft is nor mally spl ned at its end anti the driving sleeve it is provided with in ernal splines thhough which it is drivably connected to he take ofi shait wh n the. housing is mounted on the.- difienent al casing.

The driving, sleeve carries a bevel pinion l6 internally .of the housing, the pinion; shown. be n formed ntegra11y with the s ining eeves The pinion 1,6 meshe with an annular pevel sear 11 which s m unted in the housing-91 otation about a vertical and is helcin ninst ertical displ cement. in the ,hoi-lsine-v .A gclr'ih. shafi}. I; is slidabie longitudinally through he hevel g ar [I and is, connected tor rotation. therewith as hi! means of. a .key i9 sl dab y fitting in se woy 2| in the shait. The shaft. it. ..'may b moved vertically by means o1! a handle 22 which is co nected through a r n Z3 to the shaft so that the it can rotate irecly but will m v axia ly w t the ring- The inne 'end of the. leve 22 is split, as shown in Figure l, and has it inner ends c nnected t links as which. a e pivoted to sha may car y e-suitahie check or other attaching means at i s lowel: end tor-attachment to .s dxill. 2.5. or to .a similar 20.01..

nsshown. in Fig. 4a, the. bevel gear-t1 is formed 1 with an elongated tubular hllb 26 which is tours naled in an nnular inwardly-extending sense?! in the housing. The gear is. held. in/place a iace gear 2.8. screwed to the hub .25 and, engaging the upper sur ace of thenanee 2.1.. ilnthisswexi thehevelgearll and. th tac s ar axeconnecteli together ,and'are held aga n t axial movement in the housing. The shaft l8 extends upward through the face gear into a cover 29 which is detachably secured to the top of the casing I 3.

At one side, the cover 29 is formed with a horizontal tubular projection 35 in which an auxiliary shaft 32 is journaled. Th shaft 32 carries a pinion 33, meshing with the face gear 28. Thus, when the power takeoff shaft is turning, it will turn botlfthe drill shaft I8 and the auxiliary shaft 32 through the pinion H, the face gear 28, and the pinion 33.

As seen in Figs. 1 and 2, the auxiliary shaft may be utilized to drive a grinding wheel shown at 24. The wheel may be directl connected to the outer end of the auxiliary shaft and may be partially enclosed in a protective housing 35 which is mounted on the end .of the tubular sleeve 3|. According to one feature of the invention, as best seen in Figures land 3, the sleeve 3| and the auxiliary shaft extend horizontally at an "f" acute angle to the axis of the power takeoff shaft and the driving sleeve I 5. This construction po- --"'sitio'nsthe wheel 34in front of and at an angle to the-length of the tractor so that minimum interference with access to the wheel is produced. I With the wheel held in the position shown in Fig. I; relatively large' pieces can be moved against fthe wheel without interference from the adjacent tractor parts.

' In'using the attachment of the present inveny tion, it can be easily attached to a conventional tractor merely by securing the fastening plate l4 tothe tractor differential housing by means of the, screws M with the'tractor power takeoff shaft drivably engaging the driving sleeve [5. With a drill as-shown 'at-25 attached to the "'drill'shaft |8, the shaft can be moved up and down through the lever 22 to perform any desired type of drilling operations or of other operations normally performed with a drill press. For orf dinary grinding operations, the grinding wheel 34 can be attached to the auxiliary shaft 32 in such aposition that the work can conveniently be brought to the wheel for grinding.

For driving various other types of auxiliary device s'such, for example, as'flexible'shaftdriven nits, a 'flexibleshaft as shown at 36 may be g attached to theauxiliary shaft. The core of the flexible shaft mayjbe secured to the auxiliary haft 32 by removing the outer cover plate of the 1; housing 35, as shown in Fig. 2, and a tool such as agrindin'g wheel 31 may be attached to the 1", outer end of the flexible shaft; It will be seen ff, that the flexible shaft can easily clear the adja-w cent tractor parts withoutrequiring any sharp bends therein due to the angle of the auxiliary ...,'sha ft ,sothatj a tool. on thj end of the flexible shaft .canbedriven efliciently andeasily. Furhfirmora'the change over from a directly connected. grinding wheel, as shown in Fig. 1, to a flexible. shaft tool, as shown in Fig. 2, can be made asily -and, quickly. It will be understood that hydesired, type of tool in place of the grinding heel 3lj mightbe employed. while on e, embodiment.of,the inventionv has been'shown and describedin' detail herein, it will hequnderstood thatthis is illustrativeonly and is np tfl to be taken. as a definition of the scope th nv i hrefer n e being had for this.

purpose to the appended claims.

bat ss i edisi' v A drill press. attachment for use with a tram-- -.tor havin a power take ofi shaft comprising a housing formed at one side with a mounting flange for securing th housing to a tractor ad'- jacent the power take off shaft, a driving member rotatably mounted in the housing adjacent the mounting flange and adapted to be connected to the power take off shaft, a ring member mounted in the housing for rotation about a vertical axis, means drivably connecting the ring member to the driving member, a vertical shaft slidably keyed in the ring member for vertical sliding movement, and means to slide the shaft vertically through the ring member.

2. A drill press attachment for use with a tractor havinga power take off shaft comprising a housing formed at one side with a mounting flange for securing the housing to a tractor adjacent the power take off shaft, a driving member rotatably mounted in the housing adjacent k the mounting flange and adapted to be connected to the power take off shaft, a ring member mounted in the housing for rotation about a vertical axis, means drivably connecting the ring member to the driving member, a vertical shaft slidably keyed in the rin member for vertical sliding movement, an auxiliary shaft rotatably mounted in the housing and drivably connected to the vertical shaft and lying at substantially a right angle to the axis of the vertical shaft, and means'to slide the vertical shaft vertically.

3. A drill press attachment for use with a tractor having a power take off shaft comprising a housing formed at one side with a mounting flange for securing the housing to a tractor adjacent the power take off shaft, a driving member rotatably mounted in the housing adjacent the mounting flange and adapted to be connected to the power take off shaft, a ring member mounted in the housing for rotation about a vertical axis, means drivably connecting the ring member to the driving member, a vertical shaft slidably keyed in the ring member for vertical sliding movement, an auxiliary shaft rotatably mounted in the housing and drivably connected to the vertical shaft and lying at substantially 'a right angle to the axis of the vertical shaft, and at an acute angle to the axis of the driving member, and means to slide the vertical shaft vertically.

4. A drill press attachment for use with a tractor having a gear casing and a horizontal power take off shaft extending through an opening therein, said -attachment comprising a housing formed at one side with a mounting plate for attachment to the tractor gear casing over the opening therein, a driving member located centrally of the mounting plate for rotation about a horizontal axis and formed for connection to the take off shaft, an annular bevel gear mounted in the housing for rotation about a vertical axis, a bevel pinion on the driving member meshing with the bevel gear, a vertical shaft extending slidably through the bevel gear and keyed thereto, and means to slide the shaft vertically through the bevel gear.

5. A drill press attachment for use with a tractor having a gear casing and a horizontal power takeoff shaft extending through an opening therein, said attachment comprising a housing formed at one side with a mounting plate for attachment to the tractor gear casing over the opening therein, a driving member located centrally of the mounting plate for rotation about to, means to slide the shaft vertically, a face gear connected to the bevel gear, an auxiliary shaft carried by the housing for rotation about a horizontal axis, and a pinion on the auxiliary shaft meshing with the face gear.

6. A drill press attachment for use with a tractor having a gear casing and a horizontal power takeoff shaft extending through an opening therein, said attachment comprising a housing formed at one side with a mounting plate for attachment to the tractor gear casing over the opening therein, a driving member located centrally of the mounting plate for rotation about a horizontal axis and formed for connection to the ta lgeoif shaft, an annular bevel gear mounted in the housing for rotation about a vertical axis, a bevel pinion on the driving member meshing with the bevel gear, a vertical shaft extending slidably through the bevel gear and keyed thereto, means to slide the shaft vertically, a face gear connected to the bevel gear, an auxiliary shaft carried by the housing for rotation about a horizontal axis, and a pinion on the auxiliary shaft meshing with the face gear, the auxiliary shaft lying with its axis at an acute angle to the axis of the driving member.

7. In a drill press construction, a housing, an annular internal flange in the housing, an annular ring member having a tubular hub extending through the flange for rotation about a vertical axis and having an annular enlarged shoulder at one end to limit its movement through the flange in one direction, a shaft slidable through the ring member and keyed thereto to be driven thereby, means to slide the shaft vertically through the ring member, a face gear connected to the other end of the ring member and engaging the flange to limit movement of the ring member therethrough in the other direction, an auxiliary shaft rotatably mounted in the housing substantially at a right angle to the first named shaft, and a pinion on the auxiliary shaft drivably connecting the auxiliary shaft to the face ear.

HUBERT M. CLARK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 501,415 Garey July 11, 1893 521,677 Smith June 19, 1894 745,721 Fetzer Dec. 1, 1903 897,316 Stewart Sept. 1, 1908 1,205,982 Eason et a1. Nov. 28, 1916 1,884,657 Gerlinger Oct. 25, 1932 2,109,519 Altorfer Mar. 1, 1938 2,227,410 Johnson Dec. 31, 1940 

